Optical coherence tomography have plural reference beams of differing modulations
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United States of America Patent
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Mar 6, 2001
Grant Date -
N/A
app pub date -
Sep 24, 1999
filing date -
Mar 26, 1997
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An optical measuring instrument which enables measurement of necessary data in a short period of time and uses a light with a short coherence length. In this instrument, such a light emitted from a light source is divided into a measurement light and a plurality of reference lights. The plurality of reference lights are processed by different frequency modulations, and then multiplexed with a light reflected from a measurement object irradiated by the measurement light. On the basis of an output of a photoelectric converter for detecting the level of the multiplexed light and the frequency of each reference light, optical characteristic data related to a plurality of measurement points are calculated.
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